Timer



FIG. 1 is a front perspective view of a timer showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view of the invention;

FIG. 4 is a back view of the invention; and,

FIG. 5 is a top plan view of the invention.

The broken lines shown in FIGS. 2 and 4 in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a timer, as shown and described. 